Annual report pursuant to Section 13 and 15(d)

Income Taxes - Income tax expense differs from expected tax expense (Details)

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Income Taxes - Income tax expense differs from expected tax expense (Details) - USD ($)
12 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Income Tax Disclosure [Abstract]    
Federal income tax at statutory rates $ (1,301,000) $ (879,000)
State income taxes (net of federal income tax benefit) (99,000) (179,000)
Impact of change in state rate 1,330,000  
Other 249,000 (105,000)
Total income tax expense (benefit) before provision for valuation allowance 179,000 (1,163,000)
Changes in valuation allowance (176,000) 1,163,000
Total income tax expense $ 3,000 $ 0